By Mari Kasanuki
Sep 22, 2014 @ 12:10 pm
Instagram (2)

This weekend saw a flurry of social media activity from snap-happy stars. Emmy Rossum rooted for the Green Knight at Medieval Times Dinner & Tournament (above, left) while Adriana Lima celebrated her 2-year-old daughter's birthday with Minnie Mouse–inspired sweets. Jamie Chung showed off her yoga moves (above, right) and the First Lady Michelle Obama made a special visit to the St. Jude Children's Research Hospital in Memphis, Tenn. See the moments celebrities snapped and shared during the weekend below!

1. Michelle Obama:"'You’re just so courageous.' —The First Lady to the children at St. Jude Children's Research Hospital in Memphis."

"You’re just so courageous." β€”The First Lady to the children at St. Jude Children's Research Hospital in Memphis

A photo posted by First Lady Michelle Obama (@michelleobama) on

2. Emmy Rossum enjoyed food and theater at Medieval Times: "It's all happening."

It's all happening.

A photo posted by Emmy Rossum (@emmyrossum) on

3. Adriana Lima:"We are ready to celebrate my little princess Sienna's birthday!"

4. Rita Ora shared a behind-the-scenes snap from the makeup chair: "Good morning. Shoot 1 time."

Good morning. Shoot 1 time.

A photo posted by Rita Ora (@ritaora) on

5. Jamie Chung:"Namaste. #werunsf #costarica #trainingneverstops."

Namaste. #werunsf #costarica #trainingneverstops

A photo posted by Jamie Chung (@jamiejchung) on

6. Selena Gomez felt a bit under the weather: "Woke up with a cold."

Woke up with a cold πŸ˜’ my day.

A photo posted by Selena Gomez (@selenagomez) on

7. Lucy Hale:"Changing it up a bit for my shoot today."

Changing it up a bit for my shoot today

A photo posted by Lucy Hale (@lucyhale) on

8. Nina Dobrev:"Sunday #selfie."

Sunday #selfie. Want the look? Follow #spon

A photo posted by Nina Dobrev (@ninadobrev) on

9. Chrissy Teigen dressed up her pet pups: "Yeehaw."


A photo posted by @chrissyteigen on

10. Tyra Banks:"Profilin' on #ANTM21 judging set."

Profilin' on #ANTM21 judging set

A photo posted by Tyra Banks (@tyrabanks) on

See more of our favorite celebrity Instagram photos here!